There are two naturally occurring isotopes of rubidium. What is the abundance of each isotope? 85Rb has a mass of 84.9118 u. ? 87Rb has a mass of 86.9092 u. ?

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 130.79…

A: The isotope of the unknown element is given as 129X and 132X.  The average atomic mass of X is given…

Q: Silver is composed of two naturally occurring isotopes: Ag-107 (51.839%) and Ag-109. The ratio of…

A: First calculate the percent abundance of Ag-109.

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 130.13…

A:

Q: (a) What isotope is used as the standard in establishing the atomic mass scale? (b) The atomic…

A: a)Atomic mass scale: It is relative scale used to determine the elements mass relative to…

Q: An element (A) has 5 isotopes. The masses (and abundances) of the isotopes 46A, 47A, 48A, 50A are…

A: Given:Average atomic mass = 47.87u.49A/50A = 3.361.

Q: In a sample of gallium there is 60.2% of gallium-69 (68.9 amu) atoms and 39.8% of gallium-71 (70.9…

A:

Q: A new element, greenriverium (Gr), has three naturally-occurring isotopes. Isotope 1 has a mass of…

A: The atomic mass is the average mass of all the isotopes. So that we calculate the average mass with…

Q: An unknown element is determined to have two naturally occurring isotopes. Isotope 1 has a mass of…

A:

Q: Potassium has 2 stable isotopes, 39K and 41K with atomic mass of 38.9637 amu and 40.9618 amu. If the…

A: Given: The average mass of potassium = 39.10 u The atomic mass of 39K = 38.9637 u The atomic mass…

Q: Bromine has two naturally occurring isotopes (Br-79 and Br-81) and has an atomic mass of 79.904 amu.…

A: The given data contains, Atomic mass of Br = 79.904 amu. mass of isotope 81Br = 80.9163…

Q: The two naturally occurring isotopes of boron, boron-10 and boron-11, have masses of10.0129370 u and…

A: Atoms that have the equal number of protons but distinct numbers of neutrons are termed as isotopes.…

Q: What mass of ammonia gas (NH3) contains 2.81 ✕ 1024 hydrogen atoms?

A:

Q: The atomic masses of 6 Li and7Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the natural…

A: The natural abundance of the heaviest isotope is to be calculated.

Q: An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 129.47…

A: Average atomic mass has Following formula - Average atomic mass = atomic mass of first isotope × % +…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: Bromine has two naturally-occurring isotopes. 79Br has a mass of 78.9 amu and accounts for 58.3% of…

A:

Q: an abundance of 2.365%. What is the abundance of the first isotoper a. 4.479% b. 6.957% d. 80.913%…

A:

Q: An imaginary element Z has two naturally occurring isotopes, ³Z and 4Z. ³Z has a mass of 3.016 amu,…

A:

Q: Cerium is the most abundant rare earth metal. Pure cerium ignites when scratched by even a soft…

A: The Isotopes given are Ce-136(atomic mass=135.907 amu), Ce-138(atomic mass=137.905 amu),…

Q: An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance…

A:

Q: A made up element ey has three natural isotopes. The isotopes each have an atomic mass of 33.02…

A:

Q: Bromine has an average atomic mass of 79.904 amu. If Br-79 has a mass of 78.92 amu and Br-81 has a…

A:

Q: a. 0 35. Rubidium has two naturally occurring isotopes, Rb-85 (relative mass 84.9118 amu) with %…

A:

Q: Unknown element, Element X, exists in nature as two isotopes: ^{351}351 X has a mass of 350.9196 u…

A: Average atomic mass=∑i=1n (mass of ith isotope)(%abundance of ith isotope)100 where 'i'…

Q: Naturally occurring thallium consists of two stable isotopes, Tl-203 and TI-205 atomic masses =…

A:

Q: an unknown element is a mixture of isotopes 120X and 122X. the average atomic mass of X is…

A:

Q: The average atomic mass of copper is 63.546 amu. Copper consists of two naturally occurring…

A: Question 2 Atomic mass of copper can be calculated using the following formula. Natural abundance…

Q: The element boron has two stable isotopes: boron-10 (10.0129 u) and boron-11 (11.0093 u). The…

A: Given : There are only 2 naturally isotopes of boron i.e B-10 and B-11. The average atomic mass of…

Q: Potassium has three isotopes with masses 38.9367 amu, 39.9640 amu, and 40.9618 amu. The abundance of…

A: Abundance of other two isotopes can be calculated as:-

Q: Gallium is a metal which forms compounds with a wide variety of uses. Some of the applications of…

A:

Q: Copper has two naturally occurring isotopes, ⁶³Cu (isotopicmass 62.9396 amu) and ⁶⁵Cu (isotopic mass…

A: Given, Mass of 63Cu (isotope I) = 62.9396 amu Mass of 65Cu (isotope II) = 64.9278 amu Atomic mass of…

Q: (2) This element has three naturally occurring isotopes-35.934512 amu, 36.893327 and 38. 825622. The…

A:

Q: A completely made up element called Krystogen has two naturally occurring isotopes. The atomic…

A: Every atom in periodic table has some atomic mass and atomic number. When atomic number of two…

Q: An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice…

A: Mass of copper atom = 4 x mass of oxygen atom

Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46T.…

A:

Q: Chlorine has two isotopes, 35Cl and 37Cl; 75.77% of chlorine is 35Cl, and 24.23% is 37Cl. The atomic…

A: To calculate the average atomic mass from isotopes with different percentages of availability, we…

Q: How many neutrons are in 37.0 ug ( ug= 10^-6 g) of 14 6 C?

A: Given :- mass of 6C14 is 37.0ug  1ug = 10-6 g  To be calculated :-  Total number of neutrons

Q: An imaginary element Xq consists of two isotopes having masses of 100.0 amu and 102.0 amu. A sample…

A: When an element exists in the form of two or more than two isotopes, the term average atomic mass Is…

Q: An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons and electrons…

A: The smallest unit that retains an element's attributes is defined as an atom. Atoms can't be created…

Q: mass

A: This question is related to atomic mass.

Q: Antimony has two naturally occuring isotopes, 121Sb and 123Sb. 121Sb has an atomic mass of 120.9038…

A:

Q: An unknown element is a mixture of isotopes 151X and 153X. The average atomic mass of X is 151.69…

A:

Q: On another planet, the isotopes of titanium have the given natural abundances. Mass (u) Isotope 46TI…

A: The data given about the isotopes of the titanium with the natural abundances: The abundance of…

Q: Boron has two naturally occurring isotopes, boron-10 with a mass of 10.0129 amu and boron-11 with a…

A:

Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

A:

Q: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.